Ryuseikan is a private dojo committed to passing down the Dentokan arts and principles as taught by Roy Jerry Hobbs Sensei to Chris Spencer-Hicks Sensei

The name "Ryuseikan" means "Hall of the righteous willow" and is made up of three Chinese characters:

柳 Ryu meaning willow tree
正 sei meaning truth or justice
館 kan meaning a meeting hall or other public building.

The willow tree is traditionally used among Japanese martial artists as a metaphor for the concept of "ju" or suppleness and pliability that is key to jujutsu technique, the idea of bending with force and redirecting it as opposed to meeting it head on in a conflict.

There is a traditional fable of a martial artist who gained insight into this concept by observing the willow tree after heavy snowfall and seeing that while the weight of the snow had crushed and broken the branches of the other more rigid trees, the willow's sinuous branches had simply given way when it got too heavy and brushed it off, leaving them intact.

Many classical ryuha use the willow in their names, the most well known of which is the Yoshin Ryu (willow heart lineage) and its derivatives.

Sekai Dentokan Bugei Renmei (World School of Traditional Martial Arts Federation). The Dentokan was founded by Col (Ret) Roy J. Hobbs, Hanshi as a means of providing instruction, and certification, in the various martial arts he has studied and practiced for over 50 years. If they so choose individual Dentokan dojo or individuals are free to join, train with, or affiliate with other martial arts groups or sporting authorities.

The Sekai Dentokan Bugei Renmei, Inc. is a member organization of the Zen Nihon Sogo Budo Renmei (All Japan Complete Martial Arts Federation), located in Kyoto, Japan. Col Hobbs also serves as Shidoin, Nippon Seibukan Academy (NSA) - U. S. A. Branch, and Fuku Shibucho for NSA English Speaking Countries. Like the Zen Nihon Sogo Budo Renmei, the Hombu Dojo of the Nippon Seibukan Academy is located in Kyoto, Japan.

Arts Represented: Shorin-Ryu Karate, Goju-Ryu Karate, Okinawan Kobudo, Ju-Jutsu/Aiki-Jutsu, Goshinjutsu and Iai-Jutsu.